Optical code division multiple access encoders and decoders based on superstructured fiber Bragg gratings
Optical code division multiple access encoders and decoders based on superstructured fiber Bragg gratings
We report a range of elementary optical coding and decoding experiments employing superstructured fiber Bragg grating (SSFBG) components for optical code division multiple access (OCDMA) system. Firstly, we perform a comparative study of the relative merits of bipolar and unipolar coding:decoding schemes and show that the SSFBG approach allows high quality Unipolar and bipolar coding. A performance close to that theoretically predicted for 7-chip, 160 Gchip/s M-sequence codes is obtained. Secondly, we report the fabrication and performance of 63-chip, 160 Gchip/s, bipolar Gold sequence grating pairs. These codes are at least 8 times longer than those generated by any other scheme based on fiber grating technology so far reported. Finally, we describe a range of transmission system experiments for both the 7 and 63-bit bipolar grating pairs. Error-free performance is obtained over transmission distances of ~25km of standard fiber. In addition, we have demonstrated error-fr
ee/penalty-free performance under multi-user operation (two simultaneous users). Our results highlight the precision and flexibility of our particular grating writing process and show that SSFBG technology represents a promising technology not just for OCDMA but an extended range of other pulse shaping, optical processing applications.
Teh, P.C.
1e229dd3-3374-4599-b220-be515ac1ed51
Petropoulos, P.
522b02cc-9f3f-468e-bca5-e9f58cc9cad7
Ibsen, M.
22e58138-5ce9-4bed-87e1-735c91f8f3b9
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
2001
Teh, P.C.
1e229dd3-3374-4599-b220-be515ac1ed51
Petropoulos, P.
522b02cc-9f3f-468e-bca5-e9f58cc9cad7
Ibsen, M.
22e58138-5ce9-4bed-87e1-735c91f8f3b9
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Teh, P.C., Petropoulos, P., Ibsen, M. and Richardson, D.J.
(2001)
Optical code division multiple access encoders and decoders based on superstructured fiber Bragg gratings.
Rank Prize Fund Mini-Symposium: Terabit Optical Networks, Grasmere, UK.
02 - 05 Apr 2001.
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Conference or Workshop Item
(Paper)
Abstract
We report a range of elementary optical coding and decoding experiments employing superstructured fiber Bragg grating (SSFBG) components for optical code division multiple access (OCDMA) system. Firstly, we perform a comparative study of the relative merits of bipolar and unipolar coding:decoding schemes and show that the SSFBG approach allows high quality Unipolar and bipolar coding. A performance close to that theoretically predicted for 7-chip, 160 Gchip/s M-sequence codes is obtained. Secondly, we report the fabrication and performance of 63-chip, 160 Gchip/s, bipolar Gold sequence grating pairs. These codes are at least 8 times longer than those generated by any other scheme based on fiber grating technology so far reported. Finally, we describe a range of transmission system experiments for both the 7 and 63-bit bipolar grating pairs. Error-free performance is obtained over transmission distances of ~25km of standard fiber. In addition, we have demonstrated error-fr
ee/penalty-free performance under multi-user operation (two simultaneous users). Our results highlight the precision and flexibility of our particular grating writing process and show that SSFBG technology represents a promising technology not just for OCDMA but an extended range of other pulse shaping, optical processing applications.
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Published date: 2001
Venue - Dates:
Rank Prize Fund Mini-Symposium: Terabit Optical Networks, Grasmere, UK, 2001-04-02 - 2001-04-05
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Local EPrints ID: 17148
URI: http://eprints.soton.ac.uk/id/eprint/17148
PURE UUID: 051d1e92-f91c-49fa-bc24-52a36352f948
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Date deposited: 15 Sep 2005
Last modified: 16 Mar 2024 02:58
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Author:
P.C. Teh
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